Fixes a bug in the express README documentation

In the README in the part with the express setup. The next() method isn't called which causes the nodejs application to just hang. No request work anymore.

Author: entropitor

Readme.md

@@ -93,6 +93,7 @@ var app = express();
 app.use(orm.express("mysql://username:password@host/database", {
 	define: function (db, models, next) {
 		models.person = db.define("person", { ... });
+		next();
 	}
 }));
 app.listen(80);